Need to answer this question on a discussion board post

Awork in three dimensions which has height, breadth and depth.

What is pictured below? a. great grotto, boboli gardens b. st. peter’s basilica c. the tempietto d. bramante grotto

How did brunelleschi solve his problem with the dome of the florence cathedral? a. he created an outer support shell. b. he created many layers of support within the dome. c. he created external supports for the dome. d. all of the above